"PUL" is an acronym for Polyurethane Laminate fabric. Some say it as "pull" others spell out the letters P-U-L. This popular diapering fabric was initially developed for the medical industry. It is soft, pliable, and waterproof and can withstand high temperatures.  PUL can be used in waterproof diaper covers and as the outer layer in “all-in-one” diapers. Other uses include bibs, art smocks, aprons, training pants, mattress pads, and washable feminine products. It makes excellent bags for carrying wet garments and as a liner for many other types of bags. 

You can also make kids raincoats, although it in not as breathable as a technical shell fabric. 

Sewing with PUL:  Do not use pins unless you are pinning only in the seam allowance. We recommend clips instead.  PUL has both a tacky side and a smooth side.  When sewing the laminate sides together, there should be no drag and no special foot is required. If you are sewing with the laminate side out, you may use a Teflon foot, or add a piece of Scotch Tape to the underside of your foot to reduce drag. You can also have a damp sponge handy and wet it before it enters the foot. Some sewists use a layer of tissue paper on both top and bottom. Use a small gauge ballpoint needle.  Always test a scrap to see if you are happy with the results. Good quality Polyester thread is recommended. If you are looking for an absorbent layer, such as Zorb, click here or for Cotton Sherpa, click here